Copper smelting furnace flue gas organic Rankin waste heat power generating method

Abstract

The invention relates to a copper smelting furnace flue gas organic Rankin waste heat power generating method. The method is characterized in that copper smelting furnace flue gas is exhausted out of a furnace and is mixed with cold air through a water cooling flue, the flue gas enters a setting chamber after carbon monoxide gas is combusted, then enters a heat accumulating temperature evener, then enters a high-temperature heat pipe evaporator and a waste heat exchanging chamber to give out heat, then enters a sinter board dust collector, and finally is exhausted into the atmosphere by being pressed into an exhaust funnel through a main fan after dust is collected; meanwhile, circulating water absorbs the heat of the flue gas from a heat exchanger to form a steam-water mixture, and then the formed steam-water mixture enters the evaporator to release the heat; organic working medium liquid absorbs heat from flue gas waste heat carriers in a low-pressure-stage evaporator and a high-pressure-stage evaporator and becomes working medium steam to expand and work in an organic turbine with a steam replenishing port and to drive a generator to generate power. The copper smelting furnace flue gas organic Rankin waste heat power generating method is characterized in that R134a is adopted as the circulating organic working medium. The copper smelting furnace flue gas organic Rankin waste heat power generating method can recycle and convert heat energy in the flue gas into high-level electric energy to the maximum extent, can also improve the dust removal capacity, and achieves a good environment-friendly effect.

Description

technical field [0001] The invention relates to a method for power generation with organic Rankine waste heat of copper smelting furnace flue gas. Specifically, it can maximize the recovery of heat energy in the flue gas and convert it into high-grade electric energy, and can improve the dust removal ability. It belongs to the utilization of waste heat of copper smelting furnace and Dust removal technology field. Background technique [0002] The metallurgical industry consumes a large amount of energy every year, and the high-temperature flue gas generated during the smelting process and the heat dissipation of equipment take away a large amount of energy. Due to the high temperature of the flue gas from the copper smelting furnace, the temperature entering the pipeline is generally around 750°C, and the dust concentration reaches 15g / Nm 3 , the ash less than 5um accounts for more than 65% of the total amount of dust, the amount of dust is large, and it is sticky and fine....

AI Technical Summary

Problems solved by technology

However, the actual steam output is far lower than the maximum evaporation capacity of the waste heat recovery device, resulting in the situation of large horses and small carts

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